Plastering machine



Dec. 23, 1930. 'r. PALATINI PLASTERING MACHINE 3 Sheets sheet 1 Filed May 18; 1929 INVENTOR Thomas Palahnl/ BY Wad-14 WITNESSES 91191 -dvr ATTORNEYS Dec. 23, 1930. -r. PALATINI PLASTERING MACHINE Filed May l8.- 1929 3 Sheets-Sheet 2 ll/Ill!l(g lg ggz g.glllrllarllllllllllllll IIIIIII IIIIIIIIIIIIIII);;IIIIIIIIIIIII;I)II;It

-INVENTOR Thomas Palatuu WITNESSES ATTORNEYS Patented l'llec. 23, 1930' 1 UNETE stares "ATENTOF t me THoMAs rA'LArIivI, onBELMAn, nnwanasnr PLASTERING MACHINE Application filed May 18, 1929. Serial No. 364,165

This invention relates to an improved plastering machine, and has for an object to pro coating of plaster thereto.

In the accompanying drawings,-

Figure 1 is a fragmentary vertical sectional view through a room with a plastering machine embodying the invention shown in con- 1 nection thereto and in position toapply plaster to the ceiling; v V

Figure-2 is a sectional view through Figure 1 approximately on the line 2-2;

Figure 3 is a fragmentary sectional view in diagram of the upper part of a room with an embodiment of the invention applied thereto showing the applying mechanism moving in the opposite direction to that shown in Figure 1;

Figure 4 is an enlarged fragmentary sectional view through Figure 1 on the line 4-4; Figure 5 is a view similar to Figure 1 but showing the ,machine positioned to apply plaster to one ofthe side walls of the room; Figure 6 is a fragmentary sectional view through F line 66.

Figure 7 is a fragmentary sectional view through Figure 5 on the line 7-? when the elevator and associated parts are in. their lowest position. 7

Referring to the accompanying drawings by numerals,1 indicates a ceiling and 2 the sidewall of a roomQ' Heretofore plaster was applied by trowels and by other means including plastering machines Which were more or less complicated.

In the present instance the machine is adaptedto apply plaster to the ceiling 1 or wall 2 according to the way the parts are adigure 5 approximately on the justed after certain slight changes havebeen made. The principal ideais to supply mortar in a hopper and to have the same automatically moved to the place of application and then spread as the machine moves across the ceiling or over the wall 2. As shown particularly in Fig. 1, the device is positioned to plaster the ceiling 1, and in doing so it starts from corner 3 and movesv partly across the ceiling, as shown in Fig. 3. The parts are then reversed and the apparatus starts from corner 4 so as to apply a coating 5 to the ceiling which will meet the first coating 6 The device may be of any desired 1 width, as for instance, two or three feet wide,

and consequently,the device must be moved across the ce ling several times in order to apply plaster over the entire ceiling. As shown in Fig. 1, a rail 7 is secured to the wall 2 by suitable nails 8. At the opposite side of the room a similar rail is provided so as to support a wheel similar to wheel 9. 7 Wheel 9is positioned to support the beam 10 through brackets 11. If desired, a pair of wheels could be arranged at each end of beam 10, al- 1 though ordinarily a single wheel 9 is arranged at each end of each of the beams 10, and said beams are connected by a suitable plate 12, whereby a frame is provided for supporting the elevator 13 and associated parts. Elevator 13 consists of a number of parts which will be hereinafter described,

said elevator being supported by depending links 14 preferably riveted or otherwise rigidly connected to horizontal bars 15, there being a bar adjacent-each of the beams 10; Elevator 13, links 14 and bars 15 form a frame connected together by shafts 16, 17 and 18. Shaft 17 carries rollers 19 and 2O, while shaft 18 carries rollers 21 and 22. Rollers 19 to 22 are positioned to roll on the beams-1O as the device moves from corner 3 toward corner 4. Shafts 16 and 18 are held apart by suitable bars 23 and 24, each of said bars being divided at a certain point and one part of each bar provided with a slot, as for instance, slot 25. Bolts 26 extend through the respective slots 25, so that the bars 23 and 24 may be adjusted longitudinally to take up or stretch the conveyor 27. This conveyor may be a belt of canvas or other material, and if desired, may have slats thereon, though ordinarily it is a plain canvas belt. Side plates 28 and 29 are carried by the respective shafts 16 and 18. The side plates 28 and 29 are provided with 1nwardly-extending flanges 31 and 32 at their upper ends, and on these flanges runs the conveyor belt 27. At the upper end the side plates 28 and 29 merge into outwardlyextending flanges 33 and which merge into deflecting walls 35 and 36, as well as an end or scraping wall 38. The end or scraping wall 38 is provided with a depending portion or kn'fe 39 for scraping the plaster from the conveyor 2 as the conveyor passes over the roller it). This roller is preferably provided with a core tube ll which is rigidly secured thereto and which in turn is loosely mounted on shaft 18, whereby the roller can freely rotate independently of shaft 18. As shown in Fig. l, roller 10 is divided into two sections connected by the respective pins 42, which pins ntend through a gear wheel -13, whereby when the gear wheel 43 is rct-ated the roller will be rotated. As indicated in dotted lines in Fig. 2, the gear wheel 13 is connected with an electric motor l by a suitable train of gears, so that as said motor operates the roller will rotate. This train of gears, as shown, consists of the gear wheel 43, gear wheel 45, gear wheel e6, shaft 47, sprocket wheel l8, sprocket chamber it), sprocket wheel 50, shaft 51, worm gear 52 and worm 53. As shown in Fig. 1, the worm 53 is connected to the armature shaft so that the parts are actuated whenever the current is turned on to the motor. This current may be from a suitable source and turned on and off by reason of the switch 54:. While the motor is operating the train or gee. s just mentioned for rotating roller 10, power is also transmitted to shaft 55 through the respective gears 56 and 57, so that the sprocket wheels 58 and 59 will be rotated. Chains 60 and 61 iass over sprocket wheels 58 and 59 and also over sprocket wheels 60" and 61, so that when these sprocket wheels are rotated they will rotate shaft 18, as these sprocktt wheels are keyed or otherwise secured to shaft 18, as shown in Fig. 4. The ratio of the train of gears and other members just described is less than that in con nection with the gear wheel 43, so that the grooved wheels 21 and 22 rotate very slowly for propelling the carriage along beam 10. The parts are naturally properly proportioned so that the elevator will elevate from the hopper 62 a continuous supply of plaster sufficient to provide a desired coating at the speed withwhich the parts are moved along the beam 10. In case the elevator provides more plaster than necessary, the additional plaster will be forced out through the openings 63 and 6 1, and said plaster will merely drop to the floor.' From Figs. 2 and 3 it will be seen that flange 3 1 is widened adjacent openings 63 and 6% so that the layer of plaster is wider than conveyor 27. In order that the con veyor 27 may not sag wnen loaded, a supporting plate 65 is provided, as shown in 1, said plate being soldered or otherwise rigidly secured to the side plates 28 and 29. Hopper 62 is riveted or otherwise secured to side plates 28 and 29 and is formed with an inclined bottom 66 coacting with a hinge bottom section 67. A set screw 68 acts to vary the opening between the bottom 66 and hinge bottom 67, whereby varying quantities of plaster may be supplied to the conveyor 27. Preferably the hopper is arranged so to discharge on the belt 27 at the point that the belt passes over roller Preferably this roller mounted on shaft 16 so as to freely rotate as the belt is moved. In operation the apiaratus starts in one corner of the room and moves as far across the room as possible to provide a layer 6, as shown in Fig. If desired, it could be moved back to its starting point and then transversely on the rail 7 so as to apply a second layer by the side of layer 6. This can be repeated until half or sligthly more than half of the ceiling has been provided with plaster. The device may then be removed from the rails and turned around, as shown in Fig. 8, and the same operation carried out from corner 4, so that the entire ceiling will be provided with an even layer of plaster. In order to conventient-ly remove the elevator 13 and associated parts, a section 70 in each of the rails 10 is made removable, and when these sections are removed the elevator and associated parts will be readily turned around and caused to function, as shown in Fig. 3. It will be understood, of course, that these sections are replaced before the second operation is started. Sections C 0 are preferably held in place by suitable bolts, though other fastening means may be used. It is, of course, understood that the workman must supply the hopper 6:2 with plaster from time to time, and the motor ll is turned off after each strip 6 has been provided so that the parts will not be operating when moved back for a new strip. The various trains of gears or power trans mission means heretofore described are properly timed, so that the parts will move along the bars 10 as the proper amount of plaster is supplied to the trowel or scraping wall 38, so that a layer of the desired thickness may be applied. The device may be used to apply the coarse foundation plaster material, or may be used to provide the finishing coat.

In Figs. 1 to 1 inclusive the device has been shown as properly positioned to apply plaster to the ceiling. When it is desired to apply plaster to a side wall, as for instance, wall 2, the parts are arranged as shown in Fig. 5. In this arrangement some parts may be removed and others substituted in order that the conveyor and the scraping wall or trowel may act in the proper manner. In this form of the'invention instead of providing bars 10, as shown in Fig. 1, vertical bars 71 and 72 are provided. One of said bars, as for instance, bar 71 is provided with a rack 73. This rack meshes continually with the pinion 74;, which pinion takes the placeof roller 22. Aside from this.

difference the construction of the elevator and associated parts is the same as shown in Fig. 3. However, the members 14 and 15 are eliminated and also the wheel 17. Instead of providing these members a link'75 is pive otally connected at 76 to the bar 23, said link carrying a roller 77 which rides on the bar 71. An adjustable stop-78 is provided for limiting the downward swinging movement of link 75, whereby the elevator 13 is held at a desired angle, as shown in the upper part of Fig. 1, until the roller 77 strikes the floor of the room, when the parts assume the position shown in dotted lines in Fig. 5. The shaft 18, instead of carrying the bars 15, carry what may be termed a frame 79 which has a single extension 80 formed into the trowel or scraping wall 81, while the opposite part is divided and carries the rods 82 and 83 on which the rollers 84 and 85 are mount-ed. and 83 so that the rollers are properly held in place and rolled on the back of bar 71. A double of the structure just described operates in connection with bar 72, so that the trowel 81 is properly supported at both ends and thereby accurately distributes or spreads the mortar. The bars 71 and 72 at their lower ends are provided with grooved rollers 87 operating on a track. At the upper end the bars 71 and 72 are riveted or otherwise rigidly secured to a supporting? frame 89, which frame has an extension 90 carrying grooved rollers 91 and 92, said grooved rollers operating on a track 93 secured to the ceiling by nails or other suitable means. By providing track 93 in this manner and also track 88 the bars 71 and 72 cannot swing away from wall 2, and consequently, the trowel member 81 may properly function. When the device is to be first operated on wall 2 the elevator is arranged as shown in dotted lines in Fig. 5, hopper 62 is filled with mortar and the motor started. By reason of the frame 79 and associated parts, and also by reason of the gear Wheel 74 shaft 18 will move upwardly parallel with wall 2 and plastering will be conveyed'to a point above the trowel 81. As the parts move upwardly roller 77 gradually approaches bar 71 and then moves upwardly riding on this bar so as to hold the elevator in the inclined position shown at the top of Fig. 5. The unspread part of the plaster above the trowel 81 adjacent the cor- A link 86 connects the rods 82 into'a moulding, as preferred. After the first strip has been .applied the parts are moved manually back to the starting point and a secondstrip is applied, bars 71 and 72 being moved over to the new location for this operation. In order that the parts may be lowered without reversing the mechanism pawl 94 is, released from its ratchet wheel and gear wheel 74 is allowed to rotate without reversing the other mechanism connected with motor 44. After the parts have been reset near the floor pawl 94 is again brought into operative engagement with its ratchet wheel and motor 44: turned on so that a second layer may be applied. This action is continued until the entire wall -2 has been coated. This arrangement may. be used for all vertical walls, while the arrangement shown in Fig; 1 is preferably for horizontal surfaces. I11 both adjustments and both formsthe elevator transmits continually supplies of plaster, and this plaster isv spread out over a given surface as the elevator and associated parts'are moved.

"Whatl claim is zr 1. A plastering machine, including rails adapted to be securedto the wallsof a room, 3 -wheelsrotatablymounted on said rails, transverse mounted on said wheels, said bars extending from one side of the room to the other, a plurality of wheels carried by said bars, a frame supported by said wheels, part of said frame acting as an elevator, said elevator being formed. with an extending wall acting as a trowel for applying the plaster raised by said elevator, and means carried by the elevator for actuating the elevator and simultaneously moving said frame along said longitudinally-positioned bars.

2. A plastering machine, including an elevator formed with top and bottom rollers, means for driving one of said rollers, a conveyor belt mounted on said rollers, a hopper for directing plaster to said belt at the lower end thereof, and means including a troweling member for receiving the plaster at a point above the other roller, whereby the plaster is automatically applied to the ceiling.

3. A plastering machine, including an elevator formed with a traveling belt for raising plaster from a lower point to a position near the ceiling, a hopper for directing plaster to said belt, means carried by the hopper for regulating the amount of plaster fed to the belt, means at the upper end of the elevator for spreading the raised plaster, and means for supporting the elevator asthe same is moved along adjacent the ceiling.

1. A plastering machine, including a suppo rting frame, an elevator, means associated with the elevator for supporting the same on said frame so that one end will move over the ceiling or side wall of a room, otally and slidably supporting said elevator,

ner 3 issmoothed out by hand or is formed,

said means piv- V a hopper carried by said means for feeding plaster to the elevator, and a spreading trowel coacting with the elevator at the end furthestirom the hopper for spreading the plaster as the elevator is moved over the surface to be plastered.

5. A plastering machine, comp "ising a supporting trameformed with a track, a carriage supported by said frame, said carriage including traction wheels mounted to roll on said track as the machine functions, a hopper positioned at the lowest point of said carriage, and an elevator for taking plaster from said hopper and moving the same to the plaster to be plastered, and aspreading structure carried by the elevator positioned at the discharge end of the elevator and functioning to receive and spread the mortar as it leaves the elevator.

6. A plastering machine comprising supporting rails, a framework including parallel bars movably supported on said rails, means for spreading mortar, a supply hopper and an elevator slidably mounted on said bars, said elevator functioning to take mortar from said hopper and discharge the mortar on to said spreading means, said spreadingmeans functioning to spread the mortar as the elevator and associated parts move along said bars.

THOMAS PALATINI. 

